Not sure if there is a directly compatible camcorder that stores in the M4V format. There are many conversion programs beside iTunes.

Sony had several Mavica models that were CD based. These are no longer in production but you might find some on line used. The Megapixel count will be very small...4MP at best.
If virus is an issue, there are some cameras that shoot to internal memory only and connect thru USB...see if that is acceptable.

Are you looking to do 2D Animation as in drawings/cartoons or 2D Stopmotion as in Claymation?
Cartoon type work can be done on the computer using a scanner if the images are hand drawn and assembled in a editing program such as Adobe Premier or Flash. Same thing if they are drawn on the computer too.
2D Stopmotion work it a lot trickier and takes much longer. If you use a camcorder you need one that does record frame advance. This is so the camcorder only advances one frame each time you click the pause button.
It is easier to use a digital still camera and just take one picture at a time and assemble them in an editing program.

This looks to be a very good Advanced Digital Camera. Several steps above a Compact Camera and having some of the features found in a Digital-SLR. The AA batteries are convenient in that they can be found at any corner store, however the battery life in this type of camera will be very short. Approximately 20-30 shots and the batteries will begin to drain quickly.
For a little more you could go with an entry level D-SLR. You'll have many more feature like:
Changeable lenses for greater zoom
Rechargeable batteries that will last up to 500 hundred photos or more.
Full manual control plus full auto mode.
Higher ISO for low light and fast action photos.
….and more.
Canon, Nikon and Sony have some GREAT entry level D-SLR's. Take a look at them at your nearest BestBuy before making your final decision, you might find more of what your looking for in a D-SLR.